./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:37:26,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:37:26,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:37:26,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:37:26,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:37:26,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:37:26,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:37:26,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:37:26,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:37:26,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:37:26,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:37:26,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:37:26,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:37:26,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:37:26,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:37:26,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:37:26,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:37:26,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:37:26,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:37:26,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:37:26,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:37:26,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:37:26,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:37:26,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:37:26,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:37:26,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:37:26,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:37:26,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:37:26,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:37:26,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:37:26,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:37:26,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:37:26,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:37:26,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:37:26,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:37:26,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:37:26,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:37:26,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:37:26,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:37:26,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:37:26,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:37:26,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 15:37:26,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:37:26,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:37:26,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:37:26,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:37:26,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:37:26,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:37:26,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:37:26,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:37:26,794 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:37:26,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:37:26,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:37:26,796 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:37:26,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:37:26,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:37:26,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:37:26,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:37:26,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:37:26,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:37:26,797 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 15:37:26,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:37:26,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:37:26,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:37:26,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:37:26,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:37:26,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:37:26,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:37:26,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:37:26,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:37:26,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:37:26,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:37:26,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:37:26,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:37:26,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:37:26,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:37:26,801 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:37:26,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:37:26,801 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 [2022-11-25 15:37:27,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:37:27,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:37:27,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:37:27,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:37:27,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:37:27,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-11-25 15:37:30,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:37:30,773 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:37:30,775 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-11-25 15:37:30,831 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/data/84f90025f/93960d6c8d334d46b8378dce25152d9d/FLAG25c29e8ef [2022-11-25 15:37:30,850 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/data/84f90025f/93960d6c8d334d46b8378dce25152d9d [2022-11-25 15:37:30,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:37:30,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:37:30,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:37:30,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:37:30,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:37:30,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:37:30" (1/1) ... [2022-11-25 15:37:30,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4ce32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:30, skipping insertion in model container [2022-11-25 15:37:30,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:37:30" (1/1) ... [2022-11-25 15:37:30,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:37:30,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:37:31,419 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2022-11-25 15:37:31,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:31,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:31,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:31,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:31,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:31,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:32,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:32,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:33,051 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 15:37:33,057 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:33,063 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:33,073 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:33,235 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 15:37:33,243 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 15:37:33,440 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 15:37:33,735 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 15:37:33,744 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 15:37:33,827 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 15:37:33,831 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 15:37:34,210 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 15:37:34,215 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 15:37:34,219 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 15:37:34,338 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 15:37:34,339 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 15:37:34,343 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 15:37:34,343 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 15:37:34,523 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 15:37:34,562 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 15:37:34,746 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 15:37:34,750 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 15:37:34,940 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 15:37:35,162 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:37:35,162 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 15:37:35,163 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:37:36,414 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 15:37:36,414 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:36,420 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:36,425 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:36,431 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:37,205 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 15:37:37,210 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 15:37:37,215 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 15:37:37,224 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 15:37:37,225 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 15:37:37,229 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 15:37:37,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:37:37,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:37:37,294 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2022-11-25 15:37:37,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:37:37,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:37:37,366 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 15:37:37,367 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:37,368 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:37,369 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 15:37:37,381 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 15:37:37,384 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 15:37:37,390 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 15:37:37,412 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 15:37:37,417 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 15:37:37,421 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 15:37:37,421 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 15:37:37,432 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 15:37:37,433 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 15:37:37,433 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 15:37:37,440 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 15:37:37,441 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 15:37:37,441 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 15:37:37,442 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 15:37:37,456 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 15:37:37,459 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 15:37:37,466 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 15:37:37,467 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 15:37:37,474 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 15:37:37,480 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:37:37,480 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 15:37:37,480 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:37:37,672 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 15:37:37,675 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:37,680 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:37,691 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:37,696 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 15:37:37,751 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 15:37:37,756 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 15:37:37,758 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 15:37:37,760 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 15:37:37,761 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 15:37:37,762 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 15:37:37,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:37:38,459 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:37:38,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38 WrapperNode [2022-11-25 15:37:38,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:37:38,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:37:38,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:37:38,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:37:38,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,655 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 19, statements flattened = 492 [2022-11-25 15:37:38,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:37:38,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:37:38,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:37:38,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:37:38,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:37:38,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:37:38,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:37:38,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:37:38,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (1/1) ... [2022-11-25 15:37:38,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:37:38,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:37:38,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:37:38,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f75376-8e97-40b8-a260-a136a5186620/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:37:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:37:38,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:37:38,807 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-11-25 15:37:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-11-25 15:37:38,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:37:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:37:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:37:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 15:37:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:37:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-11-25 15:37:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 15:37:38,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:37:38,819 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:37:39,400 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:37:39,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:37:40,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:37:40,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:37:40,306 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:37:40,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:37:40 BoogieIcfgContainer [2022-11-25 15:37:40,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:37:40,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:37:40,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:37:40,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:37:40,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:37:30" (1/3) ... [2022-11-25 15:37:40,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddeba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:37:40, skipping insertion in model container [2022-11-25 15:37:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:38" (2/3) ... [2022-11-25 15:37:40,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddeba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:37:40, skipping insertion in model container [2022-11-25 15:37:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:37:40" (3/3) ... [2022-11-25 15:37:40,345 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-11-25 15:37:40,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:37:40,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:37:40,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-25 15:37:40,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:37:40,528 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 15:37:40,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 560 places, 565 transitions, 1146 flow [2022-11-25 15:37:40,840 INFO L130 PetriNetUnfolder]: 12/563 cut-off events. [2022-11-25 15:37:40,840 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:37:40,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 563 events. 12/563 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 634 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 474. Up to 4 conditions per place. [2022-11-25 15:37:40,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 565 transitions, 1146 flow [2022-11-25 15:37:40,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 549 places, 554 transitions, 1117 flow [2022-11-25 15:37:40,862 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:37:40,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 549 places, 554 transitions, 1117 flow [2022-11-25 15:37:40,878 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 549 places, 554 transitions, 1117 flow [2022-11-25 15:37:40,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 549 places, 554 transitions, 1117 flow [2022-11-25 15:37:41,042 INFO L130 PetriNetUnfolder]: 12/554 cut-off events. [2022-11-25 15:37:41,042 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:37:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 554 events. 12/554 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 0 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 474. Up to 4 conditions per place. [2022-11-25 15:37:41,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 27696 [2022-11-25 15:43:45,089 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 337 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:43:55,347 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 337 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:44:00,930 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 329 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:44:06,087 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 274 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:48:44,451 WARN L233 SmtUtils]: Spent 4.43m on a formula simplification. DAG size of input: 579 DAG size of output: 575 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:50:31,186 WARN L233 SmtUtils]: Spent 1.78m on a formula simplification that was a NOOP. DAG size: 510 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)